1. Why would most Americans be against communism in the 1920s?
2. What caused the Red Scare?

Answer to your second question

Origins. The First Red Scare's immediate cause was the increase in subversive actions of foreign and leftist elements in the United States, especially militant followers of Luigi Galleani, and in the attempts of the U.S. government to quell protest and gain favorable public views of America's entering World War I.

did i help? i want brainliest please!

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so. 

to keep us neatruel and not get involved in any wars

he assumed control of treaty negotiations with a hostile power